1285125 has 32 divisors (see below), whose sum is σ = 2246400. Its totient is φ = 651200.

The previous prime is 1285117. The next prime is 1285129. The reversal of 1285125 is 5215821.

It is not a de Polignac number, because 1285125 - 2³ = 1285117 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1285095 and 1285104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8551 + ... + 8699.

It is an arithmetic number, because the mean of its divisors is an integer number (70200).

2^1285125 is an apocalyptic number.

1285125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1285125 is a deficient number, since it is larger than the sum of its proper divisors (961275).

1285125 is a wasteful number, since it uses less digits than its factorization.

1285125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190 (or 180 counting only the distinct ones).

The product of its digits is 800, while the sum is 24.

The square root of 1285125 is about 1133.6335386711. The cubic root of 1285125 is about 108.7214220059.

It can be divided in two parts, 128 and 5125, that added together give a triangular number (5253 = T₁₀₂).

The spelling of 1285125 in words is "one million, two hundred eighty-five thousand, one hundred twenty-five".